Patent US2743492A successfully refreshed from Google Patents.
US2743492A
Expired / Lapsed
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Apparatus for controlling the flow of molten metal
Assignee: Allegheny Ludlum Steel Corp
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Filing: 1953-04-20
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Granted: 1956-05-01
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Expires: 1973-04-20
Abstract
No abstract record available.
Inventors
- 👤 Easton Rufus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:30
CPC Classifications
G; G01; G01F; G01F13/00; G01F13/001; B; B01; B01F; B01F25/00; B01F25/20; B22; B22D; B22D11/00; B22D11/16; B22D11/18; B22D11/181; B22D11/185; B22D39/00; B22D39/003; F; F15; F15C; F15C1/00; F15C1/02; F15C1/04; F15C1/14; F15C1/20; F27; F27D; F27D3/00; F27D3/18; G01N; G01N15/00; G01N15/10; G01N15/1031; G01N15/12; G01N15/134; G01N2015/1019; Y; Y10; Y10T; Y10T137/00; Y10T137/4456; Y10T137/4643
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
183 words
APPARATUS FOR CONTROLLING THE FLOW OF A STREAM OF MOLTEN METAL FROM A TUNDISH OF REFRACTROY MATERIAL HAVING AN ORIFICE THEREIN INTO A MOLD DISPOSED TO RECEIVE SUCH METAL, THE COMBINATION THEREWITH OF A PAIR OF ELECTRODES DISPOSED IN SUBSTANTIAL ALIGNMENT ON OPPPOSITE SIDES OF THE ORIFICE FOR PASSING AN ELECTRICAL CURRENT THROUGH THE STREAM OF MOLTEN METAL FLOWING THERETHROUGH, MAGNETIC POLES DISPOSED ON OPPOSITE SIDES OF THE ORIFICE DISPLACED 90* FROM THE PAIR OF ELECTRODES FOR DEVELOPING A MAGNETIC FLUX THROUGH THE STREAM OF MOLTEN METAL FOR COOPERATING WITH THE FLOW OF CURRENT BETWEEN THE ELECTRODES TO PRODUCE A POSITIVE FORCE ON THE STREAM, REACTIVE MEANS CONNECTED TO CONTROL THE MAGNETIC FLUX BETWEEN THE MAGNETIC POLES, MEANS RESPONSIVE TO THE LEVEL OF THE MOLTEN METAL IN THE MOLD FOR PROVIDING A DIRECT CURRENT SIGNAL INDICATIVE OF SAID LEVEL, AND MEANS FOR IMPRESSING A MEASURE OF THE DIRECT CURRENT SIGNAL ON THE REACTIVE MEANS TO THEREBY PROVIDE A POSITIVE CONTROL OF THE MAGNETIC FLUX TO CONTROL THE POSITIVE FORCE APPLIED TO THE STREAM OF MOLTEN METAL AS THE METAL FLOWS THROUGH THE ORIFICE.
Claim 2
Dependent Claim
183 words
APPARATUS FOR CONTROLLING THE FLOW OF A STREAM OF MOLTEN METAL FROM A TUNDISH OF REFRACTROY MATERIAL HAVING AN ORIFICE THEREIN INTO A MOLD DISPOSED TO RECEIVE SUCH METAL, THE COMBINATION THEREWITH OF A PAIR OF ELECTRODES DISPOSED IN SUBSTANTIAL ALIGNMENT ON OPPPOSITE SIDES OF THE ORIFICE FOR PASSING AN ELECTRICAL CURRENT THROUGH THE STREAM OF MOLTEN METAL FLOWING THERETHROUGH, MAGNETIC POLES DISPOSED ON OPPOSITE SIDES OF THE ORIFICE DISPLACED 90* FROM THE PAIR OF ELECTRODES FOR DEVELOPING A MAGNETIC FLUX THROUGH THE STREAM OF MOLTEN METAL FOR COOPERATING WITH THE FLOW OF CURRENT BETWEEN THE ELECTRODES TO PRODUCE A POSITIVE FORCE ON THE STREAM, REACTIVE MEANS CONNECTED TO CONTROL THE MAGNETIC FLUX BETWEEN THE MAGNETIC POLES, MEANS RESPONSIVE TO THE LEVEL OF THE MOLTEN METAL IN THE MOLD FOR PROVIDING A DIRECT CURRENT SIGNAL INDICATIVE OF SAID LEVEL, AND MEANS FOR IMPRESSING A MEASURE OF THE DIRECT CURRENT SIGNAL ON THE REACTIVE MEANS TO THEREBY PROVIDE A POSITIVE CONTROL OF THE MAGNETIC FLUX TO CONTROL THE POSITIVE FORCE APPLIED TO THE STREAM OF MOLTEN METAL AS THE METAL FLOWS THROUGH THE ORIFICE.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-01 | 1959-10-31 | 1960-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-01 | 1963-10-31 | 1964-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-01 | 1967-10-31 | 1968-05-01 | $7700.00 | Window Closed / Lapsed |